Kumho Ecsta ASX (KU21)

Quite possibly the best Ultra High Performance tire in the market today. The New ECSTA ASX combines ultra high performance with everyday needs of all season traction, low noise, outstanding ride comfort, and affordability. Specifically built for the most demanding of conditions, the ECSTA ASX uses the latest technology and silica compounding to deliver a truly unique driving experience.

The ASX's belt pacakage is capable of greatly improving wear handling and delivering ride comfort because of high tensile steel belts and jointless nylon full cap plies.

Helpful Resources

The Kumho Ecsta ASX (KU21) is unavailable for purchase or is currently out of stock.

All Season Ultra High Performance

Quite possibly the best Ultra High Performance tire in the market today. The New ECSTA ASX combines ultra high performance with everyday needs of all season traction, low noise, outstanding ride comfort, and affordability. Specifically built for the most demanding of conditions, the ECSTA ASX uses the latest technology and silica compounding to deliver a truly unique driving experience.

The ASX's belt pacakage is capable of greatly improving wear handling and delivering ride comfort because of high tensile steel belts and jointless nylon full cap plies.

I have always driven Honda, Acura vehicles and I don't baby them. I have used these tires on several occasions, because they are cheap, and for the most part they handle good in the dry Texas climate. The tread wear is terrible. I put a set of these on my Acura TL 6-speed and they lasted all of 17k miles. I drive my cars relatively hard, but I don't burn out or drift. These tires are good in dry conditions, however, they are terrible in the rain. I do a lot of highway driving, and I have to reduce my speed by at least 10mph in order to not slide all over the road. I bought a set of falken azenis pt-722 for my new rims, but they ordered the wrong size so these were the only thing they have in stock. I went ahead and had them install them. Bad idea. I called Discount Tire and they told me to bring them back and they would put the falcons on. This is why I will only buy tires from Discount Tire. They care. So in closing, not such a good tire. If you can afford a little more, get something different... If not, get these and replace them in a year.

Size: 245/40R18

Vehicle: 27353 KM of Tire Wear

Anonymous
made this review on 10/7/2013 and is a
Aggressive Driver (Hard Cornering)

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Overall:

4.5

Dry

5.0

Wet

4.0

Snow

3.0

Handling

5.0

Comfort

5.0

Noise

4.0

Treadwear

5.0

Best tire PERIOD! I driven on just about everything worth a damn. From Bridgestone, Goodyear, Dunlop (before goodyear bought 'em) Michellin, Firestone you name it. The Ecsta ASX replaced the Supra and kept some of the same design while adding a second channel for increased grip in turns. Best daily tire I've owned, hands down. Kumho makes the best racing slicks too. The only reason these tires could get a bad review comes down to two things:
1) Improper installation. These tires (because of their design) only rotate in one direction. If installed against the rotation arrow mark on the side, they will handle as described in some of the reviews with poor performance, hydroplaning in water etc.
2) The tires are so good, other tire makers are bad mouthing them because they are made in China. Mickey Thompson has probably put a hit out on 'em!
Go get a set and see for yourself. Don't be fooled by the haters.

Size: 245/45R17

Vehicle: 40225 KM of Tire Wear

Anonymous
made this review on 1/29/2013 and is a
Aggressive Driver (Hard Cornering)

Anonymous
made this review on 12/31/2012 and is a
Aggressive Driver (Hard Cornering)

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Overall:

4.3

Dry

5.0

Wet

4.0

Snow

1.0

Handling

5.0

Comfort

3.0

Noise

3.0

Treadwear

5.0

Excellent tire! Sustained 180kph no problem. Confidence inspiring & razor sharp response. Good even treadwear! Had them to the wear bars & just replaced with Falken 912, I like the Ecsta ASX better.
I drove this tire hard, I pass by mountain passes on my way to work everyday, this tire is a joy.
Only gripe is once the smaller sipes are gone & you are nearing the wear bars, it tends to hydroplane at high speeds but below 80 is ok.
I have dedicated winter tires & snow rating is not accurate.
I keep my tires inflated properly & check tire pressure every month. I also rotate every 10,000km.

Anonymous
made this review on 10/2/2012 and is a
Aggressive Driver (Hard Cornering)

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Overall:

5.0

Dry

5.0

Wet

5.0

Snow

4.0

Handling

5.0

Comfort

5.0

Noise

5.0

Treadwear

5.0

I've had these tires for a little over a year now. Great tires! I've driven over 30,000 in this time. I've driven in wet, monsoon rains, semi-deep snow and hot and dry. Great handling, comfort, low noise and I recently had one of the tires off of the car and the tread was still very deep. I'm a smart driver...don't peel out at starts, don't come to agressive stops, etc. So, maybe it's the driver that makes the difference on the treadwear of this tire...(unlike many of the reviews here). This tire to me was worth every penny. Only problem I had, was a nail in the tread the other day while driving about 70mph. It took a while before I could pull over to the side. In this short time, the inside of the sidewall was trashed and I had to buy a whole new tire. This tire is hard to find and cost much more this time than it did a year ago.

Size: 235/45R17

Vehicle: 2007 SAAB 9-3 2.0T Sedan with 46661 KM of Tire Wear

Anonymous
made this review on 9/12/2012 and is a
Confident, Experienced Driver

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